PLEAASE HELP KE WITH THESE THREE YOULL GET POINTS
...
Answers: 3
Physics, 21.06.2019 21:30
In what direction does the medium move relative to the direction of the wave? explain.
Answers: 3
Physics, 22.06.2019 03:30
The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared
Answers: 1
Physics, 22.06.2019 05:50
Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.
Answers: 2
Physics, 22.06.2019 08:40
Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?
Answers: 1
Mathematics, 11.02.2021 18:20
Mathematics, 11.02.2021 18:20
Mathematics, 11.02.2021 18:20
Mathematics, 11.02.2021 18:20
History, 11.02.2021 18:20
History, 11.02.2021 18:20
English, 11.02.2021 18:20
English, 11.02.2021 18:20
Mathematics, 11.02.2021 18:20